everything-claude-code: Command for Claude Code

.opencode/commands/tdd.md

tdd is a command for Claude Code, OpenCode from Infopibe/everything-claude-code. It costs 11 tokens per session (422 once invoked), scanned A, a copy of tdd, MIT.

A command that requires test-driven development, or TDD: write a failing test first, add the smallest code that passes it, then improve the code while keeping tests green.

In plain words
What is it for?
Use it when implementing TypeScript features that need interfaces, tests, repeated red-green-refactor cycles, and at least the stated test coverage.
Why use it?
It makes the intended behavior explicit and checks edge cases and errors before implementation is treated as finished.

Command for Claude CodeOpenCode

Written for Claude Code and OpenCode: $ARGUMENTS substitution, but also installed under .opencode/. Also seen: agent in frontmatter.

This is Infopibe/everything-claude-code's own configuration. It tells Claude Code and OpenCode how to work on everything-claude-code itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything everything-claude-code configures →

Part of the everything-claude-code plugin — 17 skills, 31 commands, 8 agents shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to Infopibe/everything-claude-code. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/Infopibe/everything-claude-code/main/.opencode/commands/tdd.md
Clone the repo
git clone --depth 1 https://github.com/Infopibe/everything-claude-code

Made for: Claude Code, OpenCode.

Or install everything-claude-code, the plugin that ships this one along with the rest of its 17 skills, 31 commands, 8 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for tdd

README.md
[![agentmods](https://agentmods.dev/badge/commands/infopibe/everything-claude-code/tdd/github.svg)](https://agentmods.dev/commands/infopibe/everything-claude-code/tdd)
Your own site
<a href="https://agentmods.dev/commands/infopibe/everything-claude-code/tdd"><img src="https://agentmods.dev/badge/commands/infopibe/everything-claude-code/tdd/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for tdd

Your own site · 80×15
<a href="https://agentmods.dev/commands/infopibe/everything-claude-code/tdd"><img src="https://agentmods.dev/badge/commands/infopibe/everything-claude-code/tdd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 422 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00011 $0.00422
Opus 5.5 $0.00004 $0.00169
Sonnet 5.5 $0.00002 $0.00084
Haiku 4.5 $0.00001 $0.00042

Measured 1mo ago against content hash 0f57c5163f08, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tdd scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to tdd — 85 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.opencode/commands/tdd.md · 67 lines

What it actually says

TDD Command

Implement the following using strict test-driven development: $ARGUMENTS

TDD Cycle (MANDATORY)

RED → GREEN → REFACTOR → REPEAT
  1. RED: Write a failing test FIRST
  2. GREEN: Write minimal code to pass the test
  3. REFACTOR: Improve code while keeping tests green
  4. REPEAT: Continue until feature complete

Your Task

Step 1: Define Interfaces (SCAFFOLD)

  • Define TypeScript interfaces for inputs/outputs
  • Create function signature with throw new Error('Not implemented')

Step 2: Write Failing Tests (RED)

  • Write tests that exercise the interface
  • Include happy path, edge cases, and error conditions
  • Run tests - verify they FAIL

Step 3: Implement Minimal Code (GREEN)

  • Write just enough code to make tests pass
  • No premature optimization
  • Run tests - verify they PASS

Step 4: Refactor (IMPROVE)

  • Extract constants, improve naming
  • Remove duplication
  • Run tests - verify they still PASS

Step 5: Check Coverage

  • Target: 80% minimum
  • 100% for critical business logic
  • Add more tests if needed

Coverage Requirements

Code Type Minimum
Standard code 80%
Financial calculations 100%
Authentication logic 100%
Security-critical code 100%

Test Types to Include

  • Unit Tests: Individual functions
  • Edge Cases: Empty, null, max values, boundaries
  • Error Conditions: Invalid inputs, network failures
  • Integration Tests: API endpoints, database operations

MANDATORY: Tests must be written BEFORE implementation. Never skip the RED phase.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 67 lines · 11 tokens per session scan A 0f57c5163f08

Subscribe to this mod's changes

tdd is a command published in the GitHub repository Infopibe/everything-claude-code (8 stars, last pushed 7mo ago), licensed MIT. It adds 11 tokens to every session and 422 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to tdd, differing in 85 lines, and is treated as a copy.